You say durdely dur in replace of "I've heard this story already" or "blah blah blah" ( So kesha's song blah blah blah can be easily replaced with Dudely Dur) also in replace of sex you can say " Dirty Durdely Dur". This is a very commonly used word by Ryan who works in a ticket office in UT. Use it wisely...
"Have you heard Kesha's new song Durdely Dur?"
Use"Durdely Dur this story is SO old!"
Use "Did you totally Dirty Durdely Dur her last night?"